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⚓ Seal it fast, seal it smart—your boat’s best defense starts here!
Berkland’s 10 oz Marine Adhesive Sealant 4000/4200 FC is a professional-grade, fast-curing polyurethane paste designed for flexible, semi-permanent bonding and sealing above and below the waterline. It offers superior UV and weather resistance, crack resistance, and strong adhesion to fiberglass, gelcoat, wood, and other marine materials. With a 24-hour cure time and easy single-component application, it’s the go-to sealant for durable, watertight marine repairs and installations.
| ASIN | B0CNBFSCZF |
| Brand | Berkland |
| Brand Name | Berkland |
| Compatible Material | Fiberglass |
| Container Type | Can |
| Customer Reviews | 4.7 out of 5 stars 297 Reviews |
| Global Trade Identification Number | 00860010716663 |
| Included Components | Nozzle |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Weight | 13 Ounces |
| Item form | Paste |
| Item package quantity | 1 |
| Manufacturer | Berkland |
| Material | PU |
| Material Type | PU |
| Model | 86001071 |
| Other Special Features of the Product | Crack Resistant |
| Part Number | 10ozms4042u |
| Special features | Crack Resistant |
| Specific Uses For Product | Marine |
| Specific uses for product | Marine |
| UPC | 860010716663 |
| Volume | 10 Fluid Ounces |
C**S
Easy to use, economy product that works well.
Used to secure new wall panel in a boat locker. Works as designed. Easy to apply with caulk gun and after 24 hours it’s setting up and holding firm. Cleanup up is typical, paint thinner or stronger. No idea on longevity, but it appears to work properly. A huge savings over big brands. It does seem smoother or thinner than big brands but works well and is easier to use. I will purchase again on my next project.
A**R
Great product and fast shipping
Great product and fast shipping!
T**E
So far, better than the brand name stuff
I used the 3m version of this that has started to crack after 2/3 years on my boat. After one use I am impressed with this, it applies smoother than 3m and has held up better over the past 3 months than the brand name stuff did. Much better value and it seals well. I will update this after a year or two.
L**R
Great marine adhesive
Good stuff. Worked well on the boat, and it adheres to silicone which is a plus. Has held up well in my last couple outings on the boat, so no complaints on water resistance.
J**E
Good stuff, but hard to get it to flow out
Very hard to get it to flow out of the tube
Trustpilot
4 days ago
3 days ago